Fastener



FIG. 1 is a front, top, left perspective view of a fastener, showing my new design;

FIG. 2 is a right side view of the fastener of FIG. 1 ;

FIG. 3 is a left side view of the fastener of FIG. 1 ;

FIG. 4 is a front view of the fastener of FIG. 1 ;

FIG. 5 is a rear view of the fastener of FIG. 1 ;

FIG. 6 is a top view of the fastener of FIG. 1 ; and,

FIG. 7 is a bottom view of the fastener of FIG. 1 .

The broken lines shown are included for the purpose of illustrating portions of the fastener that form no part of the Claim. 

CLAIM The ornamental design for a fastener, as shown and described. 